I'm in the same boat with the car I have now. I was thinking about roller rockers but then it usually mushrooms into removing the heads, doing a set of screw in studs, guides and likely more when I get to that stage.
I'm not planning to buzz my stock 302 beyond 6500 when hammering it through a few gears, and it's not like I'll be doing it that often so I then relented to leaving the stock valve train alone. Just my 2 bits...and just so you know, that 12-107-3 cam choice makes "excellent" vacuum for the brakes. Mine are fantastic right down to 900 idle and brakes work awesome.
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I like solid lifter cars, big cams and cars w/ 3 pedals in them. 
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